26. The maximum number of jets, generally, employed in an impulse turbine without jet interference are
27. In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.
28. Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)
29. A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the
30. When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.
31. A Francis turbine is used when the available head of water is
32. The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is
33. A hydraulic coupling belongs to the category of
34. The principle of jet propulsion is used in driving the ships and aeroplanes.
35. In the casing of a centrifugal pump, the kinetic energy of the water is converted into pressure energy before the water leaves the casing.
36. The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as
37. For centrifugal pump impeller, the maximum value of the vane exit angle is
38. In a reaction turbine, the pressure head of water, while flowing over the vanes, is converted into kinetic head before leaving the wheel.
39. Manometric head, in case of a centrifugal pump, is equal to
40. How many players make a Basket Ball team?
41. In an impulse turbine, the jet of water impinges on the bucket with a low velocity and after flowing over the vanes, leaves with a high velocity.
42. The capacity of a hydraulic accumulator is generally specified as the maximum amount of energy stored.
43. The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is
44. The breast water wheels are those in which the wheel runs partly by the weight of water and partly by the impulse of water.
45. The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as
46. The impeller of a centrifugal pump may have
47. Kinematic similarity is said to exist between the model and the prototype, if both of them
48. Narasimhan Committee was appointed to make recommendations on the?
49. A reciprocating pump is suitable for less discharge and higher heads.
50. The flow ratio of Francis turbine is defined as the ratio of the